1. Discovery Telescopes Offers a complete line of Dobsonian reflectors up to 24 in aperture, plus optical primaries and elliptical flats. http://www.discovery-telescopes.com/

Orders: Information: Fax: NEW LX90 NEW RCX400 Series NEW ETX Series Coronado PST Telescope ... Astrosystems TeleKits click here for A MAJOR ANNOUNCEMENT FROM DISCOVERY TELESCOPES "please add me to the list of satisfied Discovery customers! The Discovery mirrors simply have no errors at all. Near perfection!... click here to read entire letter Wide Scan Eyepieces home contact Discovery ... Discovery store l

2. Orion Telescopes And Binoculars Manufacturer and retailer of telescopes, spotting scopes, binoculars, eyepiecesand accessories. Located in California. http://www.telescope.com/

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3. Dave Stevick's Weird Telescopes Page Features several unique solutions for telescope issues with images. http://bhs.broo.k12.wv.us/homepage/alumni/dstevick/weird.htm

June 21, 1911 Nov. 15, 2004 In memory A.L. Woods Engineer Craftsman Friend w e i r d Telescopes A big West Virginia welcome to my weird telescope page. Achieving the very best views of the night sky is what this page is about. Showcased here are a variety of solutions by individuals in search of the perfect image. These instruments all seem strange: the need to use mirrors while keeping them from shadowing each other gives these telescopes odd geometries. Come join the quest. He appointed the moon for seasons: the sun knoweth his going down. Thou makest darkness and it is night: Anderson-Newtonian Carl Anderson's telescope resists easy classification. The primary is spherical but is too short to work as a Herschelian. Residuals of coma and astigmatism are removed by mechanically bending the primary using either of two schemes. A must see World's first binocular TCT At long last, the world now has a working tilted-component binocular. This achievement, a dream for many of us, was pulled off by John Francis. John has information about this newly completed telescope on his

4. Litebox Telescopes Designs and manufactures portable Dobsonian telescope frames in the 12.5 to 18 inch aperture range. http://www.litebox-telescopes.com/

This site will introduce you to a telescope for contemporary times, when wonderful optics crash headlong into the spreading problem of light pollution. Imagine a 12.5" telescope in your passenger seat, or an 18" scope in the back seat of any car, and imagine a design which does not compromise on shielding or rigidity. Say goodbye to 3/4" ply and find the best spots in the dark country sky. Purpose How big a scope can you transport and hand carry? Mine... To share my research, design and developments in the realm of ultra-portable, maximum-use, state-of-the-art starware. This page is intended for those who already own telescopes and understand the basics of Newtonian optical systems. My scope designs have grown out of an obsession with visual astronomy. If that is your interest, then please read on. 12.5" scope packed for car transport. Yours... You love stargazing and your current scope is slowing you down with it's bulk, it's weight, it's complexity and it's sticky bearings. Or perhaps you are ready for an increase in aperture but fear it will become an immovable object. You want a durable ultra-light scope with optics you choose and smooth, well-damped motions. You are curious about LITEBOX. Background 18" and 12.5" scopes in the back of a van.

5. Woodland Hills Telescope For Telescopes Sky And Telescope Large selection of telescopes, binoculars, CCD cameras and accessories. Site featuresan online shopping cart. Located in California. http://www.telescopes.net/

Find Top Telescope and Astronomy Equipment Visit whcamera.com for Cameras Serving You for Over 50 Years !! Toll-Free 888-427-8766 At Woodland Hills Telescopes we carry name brand telescope models, binoculars and astronomy equipment. Amateurs and professionals alike come to us for such well-known lines as Meade, Celestron, TeleVue and Bushnell,—names that are recognized for quality sky and telescope optics, outstanding design and easy-to-use features. Our knowledgeable support staff is here to help you select the best telescope with features to fit your needs and budget. Whether you're looking for one that has lightweight portability for field use, durable easy-operation for educational situations or advanced design and attractive styling for use at home, we have the perfect and affordable optics in stock. Also see are ad in Sky and Telescope. Contact us today and see our selection of telescopes and binoculars online at Woodland Hills Telescopes. Toll-Free 888-427-8766 Click HERE and try out our NEW!! DISCUSSION BOARD The Stellcam II Integrating Imaging System in action. ... ALL MEADE PRODUCTS !! FREE SHIPPING!! $100.00 OFF

6. Isaac Newton Group Of Telescopes The Isaac Newton Group of telescopes (ING) operates three worldclass telescopeson La Palma, Canary Islands, Spain. http://www.ing.iac.es/

7. Celestron International Several product lines of telescopes, binoculars, spotting scopes, microscopesand eyepieces, plus a large variety of accessories. http://www.celestron.com/

8. Telescopes In Education (TIE) Provides images taken by the telescope, an Observatory Cam, along with a calendar of current events, and weather information. http://www.telescopesineducation.com/

9. Meade Telescopes, Microscopes, Meade Instruments, Telescopes By Meade Several product lines of telescopes and accessories, eyepieces, CCD imagingequipment, astronomical software, spotting scopes, binoculars, and microscopes. http://www.meade.com/

Introducing Meade 4M Community! Since 1972 Meade has steadily increased its support for the amateur astronomical community, but this year we decided to embrace the community as never before. Become a member and take advantage of the benefits! more NEW! AutoStar Suite Update For the Deep Sky Imager PRO, Deep Sky Imager, and the LPI. Now featuring Drizzle technology. more New Meade Telescope Accessory Kits! All accessory kits feature genuine Meade Premium accessories at incredible savings! Each kit was designed specifically for your Meade ETX, LXD75, LX90, LX200GPS or RCX400 telescope. more NEW Wireless AutoStar II! Now you can operate your LX200GPS or RCX400 telescope wirelessly! more Meade Factory Outlet! Purchase Meade closeouts at blow out prices direct from our factory store. Save up to 80% off of suggested retail on telescopes and binoculars! All products come with the Meade warranty. more Submit Images From Your Deep Sky Imager!

10. Telescope Not bad! How It Works. telescopes make it possible for astronomers, and us, to study the universe. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

11. Meade Instruments Corporation - How Telescopes Work World s leading manufacturer of astronomical telescopes for the serious amateurastronomer. Products include astronomical telescopes and accessories, http://www.meade.com/support/telewrk.html

Home Sports Optics Home About Meade Product Information Dealer Referral Meade's Universe Customer Support Investor Relations Dealer Support Employment Opportunities Site Map Meade Instruments Corporation Customer Support What You Can See Through a Telescope The purpose of a telescope is not to magnify, as commonly thought, but to collect light no inherent effect whatever in determining the level of detail visible through a telescope. The planet Saturn. This image shows Saturn approximately as it appears under good atmospheric conditions through the Meade ETX telescope at a power of 100x. Example: Two telescopes, one with a main lens of 2" diameter (or aperture) and one with a main lens of 4" diameter are focused on the planet Jupiter. Both telescopes are set to use a power of 100 times (written as 100X). In the 2" telescope Jupiter's largest cloud belts are clearly observable; but in the 4" telescope the same cloud belts are seen to take on added structure and color, and smaller cloud belts are now visible that could not be discerned in the smaller instrument. It is the larger telescope's advantage in light-collecting capability that permits it to present more detail, more information, to the eye than is possible through the smaller telescope, irrespective of the powers employed on either instrument. Types of Telescopes All telescopes fall into one of three optical classes. The relative advantages of each of these telescope designs will be made clear below.

12. Astronomical Optical Interferometry The use of multiple telescopes to produce high resolution images commonly used at most modern observatories. A literature review article. http://www.geocities.com/CapeCanaveral/2309/page1.html

Astronomical Optical Interferometry A Literature Review by Bob Tubbs St John's College Cambridge April 1997 - updated 2002 Abstract This report documents the development of optical interferometry and provides a physical explanation of the processes involved. It is based upon scientific papers published over the last 150 years, and I have included references to the ones which are most relevant. The reader is assumed to have an understanding of modern optical theory up to undergraduate level - References 28 and 29 give explanations at a more basic level. The formation of images from interferometric measurements is discussed and several example images are included. Introduction Fizeau first suggested that optical interferometry might be used for the measurement of stellar diameters at the Academie des Sciences in 1867 . The short wavelength of light and the absence of sensitive calibrated detectors precluded more sophisticated interferometric measurements in the optical spectrum for over a century. After the Second World War most researchers instead turned to the radio spectrum, where macroscopic wavelengths and electronic detection greatly simplified the measurement of interferometric quantities. Modern computers, lasers, optical detectors and the data processing techniques developed for radio interferometry have recently enabled astronomers to produce high resolution images with optical arrays. At present only a few optical interferometer arrays are capable of image formation but many more are planned or under construction. The basic principles underlying the operation of optical interferometers have not changed, so I begin with a look at some of the earliest instruments.

13. Orion Telescopes Binoculars Dealer of telescopes, binoculars, and accessories for amateur astronomers and nature enthusiasts. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

14. Advice For New Astronomers Discusses telescopes, types, buying, and accessories. http://www.scopereviews.com/begin.html

So You Wanna Buy a Telescope... Advice for Beginners By Ed Ting Updated 2/2/02 So, you've decided to take the plunge and buy a telescope congratulations! Astronomy can be a life long pleasure, with the right equipment. But what to buy? And how do you not wind up with a room that looks like the above? There's more equipment out there than ever before. This article will attempt to make some sense out of the seemingly huge selection of scopes and accessories. Ready? Good. Let's begin. First of all, some words of advice: 1) Learn to spot a few constellations and maybe a planet or two with the naked eye. If you can't point to M42, how do you expect to able to point a telescope (which has a much narrower field of view) there? 2) Subscribe to one of the two major magazines, Sky and Telescope or Astronomy. These will get you started not only with finding celestial objects, it will also acquaint you with the variety of equipment out there. Don't buy anything yet! 3) Join if you know how to use them.

15. Howstuffworks "How Telescopes Work" A telescope can be as simple as a $100 amateur scope or as complicated as the Hubble space telescope. Learn how telescopes work and what to consider http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

16. Starsplitter Telescopes Start-up Page 8 to 30 aperture Dobsonian telescopes, available with a choice of optics producedby several well known opticians and optical companies. http://www.starsplitter.com/

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17. Www.telescope.com/jump.jsp?itemID=0 ItemType=H telescopes.com Summer Specials on telescopes, Spotting Scopes Best prices guaranteed. World s largest selection of telescopes, Click Here orcall toll free 1.800.303.5873. http://www.telescope.com/jump.jsp?itemID=0&itemType=HOME_PAGE

18. Telescopes.com - Summer Specials On Telescopes, Spotting Scopes Best prices guaranteed. World's largest selection of telescopes, Click Here or call toll free 1.800.303.5873. http://tmsyn.wc.ask.com/r?t=an&s=hb&uid=24312681243126812&sid=343126

19. Howstuffworks "How Telescopes Work" A telescope can be as simple as a $100 amateur scope or as complicated as theHubble space telescope. Learn how telescopes work and what to consider if you http://science.howstuffworks.com/telescope.htm

TCDA("cc=oth; dt"); Auto Stuff Science Stuff Health Stuff Entertainment Stuff ... Shop for Stuff Top Subjects Car Engines Lock Picking Nuclear Bombs Tattoos ... Gas Turbine Engines Sponsored By: Subjects Earth Science Engineering Life Science Military ... Shop For Telescopes Explore Stuff Lidrock.com Stuffo.com Big List of Articles Get the Newsletter ... Physical Science How Telescopes Work by Craig C. Freudenrich, Ph.D. Table of Contents Introduction to How Telescopes Work How They Work Refractors Reflectors Compound or Catadioptric Telescopes Telescope Mounts Eyepieces Other Accessories Make Your Own Telescope What They Can Do The Moon The Sun The Planets Comets and Meteors Deep-Sky Objects Astrophotography Features What Type of Telescope Do I Need? Optical Features Non-Optical Features Telescope Mounts Eyepieces Finders Star Diagonals and Erecting Prisms Filters Practical Considerations Other Accessories When You Shop Look Out! Where to Buy Manufacturers FAQ Cool Facts Books Lots More Information Shop or Compare Prices Photo courtesy of NASA Maybe you've been out looking at the stars in the night sky, searching for constellations; or maybe you've already learned your way around the constellations, and now you'd like to take a closer look at objects like the moon, planets or stars with the aid of a telescope A telescope is a device used to magnify distant objects. There are many types to choose from, and many price ranges to consider. How do you know which one is best for you? How can you be sure that you won't be disappointed when you take your new telescope out to see the stars? In this edition of

20. Bausch & Lomb By Bushnell Bogen Bushnell Celestron Kenko Leica Meade Nikon Penta Online retailer of telescopes, binoculars, microscopes and accessories from numerous manufacturers. Located in California. http://www.discount-telescopes.com/

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